(1)Hiking is not only a healthy but also
activity.
(2)The reason why people go hiking is
from person to person.
(3)First,hiking is very good exercise to improve people's
.
(4)Hiking is good exercise that doesn't
your body.
(5)Second,hiking is simple and
.
(6)Finally,hiking helps clear your mind so that you can return to
with confidence(信心).